Abstract A mild, efficient and eco-friendly protocol for the chemoselective protection of benzylic and primary and less hindered secondary aliphatic alcohols and phenols as trimethylsilyl ethers and different types of amines as N-tert-butylcarbamates is developed using rice husk (RiH) as the catalyst. This reagent is also able to catalyze the acetylation of alcohols, phenols, thiols and amines with acetic anhydride. Easy work-up, relatively short ...
![tert-butyl 1H-benzo[d]imidazol-2-ylcarbamate Structure](https://image.chemsrc.com/caspic/175/77474-99-8.png)